401256452420365 has 16 divisors (see below), whose sum is σ = 482475267720000. Its totient is φ = 320360152275072.

The previous prime is 401256452420347. The next prime is 401256452420389. The reversal of 401256452420365 is 563024254652104.

It is a cyclic number.

It is not a de Polignac number, because 401256452420365 - 2¹¹ = 401256452418317 is a prime.

It is a super-2 number, since 2×401256452420365² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 685840081 + ... + 686424889.

It is an arithmetic number, because the mean of its divisors is an integer number (30154704232500).

Almost surely, 2^{401256452420365} is an apocalyptic number.

It is an amenable number.

401256452420365 is a deficient number, since it is larger than the sum of its proper divisors (81218815299635).

401256452420365 is a wasteful number, since it uses less digits than its factorization.

401256452420365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860316.

The product of its (nonzero) digits is 6912000, while the sum is 49.

The spelling of 401256452420365 in words is "four hundred one trillion, two hundred fifty-six billion, four hundred fifty-two million, four hundred twenty thousand, three hundred sixty-five".